The story takes place in an era when humans and demons coexist peacefully.
Ying Wangru, a girl from the capital, had personally experienced the dangers of inferior swords, so she went south to Jinling to learn sword-making skills from a master. However, she gradually began to doubt herself amidst the incomprehensible environment and the master's arrangements. Wangru realized that he had unfinished cause and effect since he was very young, but he didn't know who or what was lingering in his mind for many years. I met a strange man by chance. He claimed that Wang Ru had brought an immortal sword down the fairy mountain. Wangru believed what he said and thought it was something from the past life, so he came to Yishui to look for the sword, but met two young girls who were also looking for the sword but couldn't see each other. On the way to find the fairy sword, Wangru gradually discovered that the cause and effect he was pursuing had been planted a hundred years ago, and these two young girls were not from this world. And outside the vast world, there is an ethereal immortal who is also watching this story.
Intention: What is "I" for myself, how is "I" for myself, and how do "we" deal with ourselves? Discuss where fate and fate come from and where they go